This, I completely disagree with. How is it hockey's fault if the Vancouver fans can't keep their emotions in check? Also, as far as official NHL media coverage and advertising goes before and after the game, they don't try to portray it as a war. Hockey does have a barbarian nature to it (which I personally think should be toned down as the game has much to offer even without all that), but a clear distinction is made between behaviour on and off the rink. Players are expected to be extremely mannered, well-spoken, professional and humble as soon as they step off the ice. It is ONLY when they are on the ice that they are allowed to let loose.
I dont know what the atmosphere is like in other sports, but when an incident like this happens in hockey, I lay the blame squarely on the fans involved. The team, the NHL, or the media has nothing to do with it.